Next-Gen File Supercharger

Shrink Files.
Expand Possibilities.

The enterprise-grade platform for lightning-fast compression and format conversion. No middleman servers—processed 100% securely inside your browser.

Start Optimizing For FreeSee How It Works
app.compressedit.com

Masterpiece.pdf

45 MB

-85%

Masterpiece_compressed.pdf

4.5 MB

100%Local Processing
90%Max Compression
0sUpload Wait Time
∞Files Supported

Built for Professionals

Stop waiting on cloud uploads. Our WebAssembly core executes heavy compression directly on your machine.

Military-Grade Privacy

Files never leave your device. All computations happen in your browser's private memory sandbox.

Ludicrous Speed

Powered by multi-threaded Web Workers. We utilize your CPU cores to crunch gigabytes in seconds.

Smart Format AI

Dynamically determines the absolute best image or document format to maximize your byte savings.

Bulk Processing

Drag in hundreds of images at once and watch our queue orchestrator handle them concurrently.

Lossless PDFs

Deep text rasterization and redundant object streaming strip fat from PDFs without degrading readability.

Secure Cloud Vault

Optionally save compressed files to your private remote Vault powered by Supabase architecture.

How It Works

1

Select Files

Drag & drop your heavy PDFs, PNGs, JPEGs, or WebP files.

2

Define Target

Optionally dial in exact parameters like 500KB target size.

3

Insta-Download

Boom. It's done locally before you can blink. Download immediately.

Create Free Account

Frequently Asked Questions

Everything you need to know about how we manage and compress your data.

Are my files uploaded to your servers?
No! That's the magic of CompressIt. All file compression algorithms execute locally within your Chrome, Safari, or Edge browser's memory using WebAssembly. Your sensitive documents never leave your machine unless you explicitly save them to our secure cloud.
Is there a limit on file size?
Since we run entirely inside your browser, the only limit is your device's RAM. Most modern laptops and phones can comfortably compress 100MB+ image and PDF payloads in seconds.
How does PDF compression actually work here?
We do true compression. Our engine opens the PDF, selectively filters out unused streams, and rasterizes bulky HD images down to an exact JPEG quality ratio you define on the slider before repacking it into a lossless, vastly smaller PDF container.
Is this service actually free?
Yes, the core compression engine is 100% free with no hidden watermarks. We believe strong utility should be accessible to everyone.